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Polarization-dependent x-ray-absorption spectroscopy of RNi2B2C (R=Er to Lu): Reduced Ni3d occupancy in YbNi2B2C

Chandan Mazumdar, Z. Hu, H. von Lips, M. S. Golden, J. Fink, P. C. Canfield, and G. Kaindl
Phys. Rev. B 64, 020504(R) – Published 11 June 2001
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Abstract

We present here the results of polarization-dependent x-ray-absorption near-edge structure (XANES) studies at the BK, CK, and NiL3 thresholds of single-crystalline borocarbide compounds RNi2B2C (with R=Er to Lu) using bulk-sensitive fluorescence yield technique. The NiL3 XANES spectrum for YbNi2B2C with photon polarization parallel to the ab plane is significantly more intense than in analogous spectra of other members of this series. This indicates a reduced Ni3d occupancy in the Ni2B2 layer in YbNi2B2C, a fact that might be responsible for the absence of superconductivity in this material.

  • Received 25 January 2001

DOI:https://doi.org/10.1103/PhysRevB.64.020504

©2001 American Physical Society

Authors & Affiliations

Chandan Mazumdar1, Z. Hu2, H. von Lips2, M. S. Golden2, J. Fink2, P. C. Canfield3, and G. Kaindl1

  • 1Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany
  • 2Institute for Solid-State and Materials Research (IFW), Dresden, P.O. Box 270016, D-01171 Dresden, Germany
  • 3Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011

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Vol. 64, Iss. 2 — 1 July 2001

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